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take two-way offset delay into account

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This commit is contained in:
Jan Käberich 2020-10-25 22:16:35 +01:00
parent d313988bfd
commit 23e3773594
1 changed files with 4 additions and 4 deletions
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8
Software/PC_Application/Calibration/calkit.cpp
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@ -176,8 +176,8 @@ Calkit::SOLT Calkit::toSOLT(double frequency)
ref.Open = (imp_open - complex<double>(50.0)) / (imp_open + complex<double>(50.0));
}
// transform the delay into a phase shift for the given frequency
double open_phaseshift = -2 * M_PI * frequency * open_delay * 1e-12;
double open_att_db = open_loss * 1e9 * 4.3429 * open_delay * 1e-12 / open_Z0 * sqrt(frequency / 1e9);
double open_phaseshift = -2 * M_PI * frequency * 2 * open_delay * 1e-12;
double open_att_db = open_loss * 1e9 * 4.3429 * 2 * open_delay * 1e-12 / open_Z0 * sqrt(frequency / 1e9);
double open_att = pow(10.0, -open_att_db / 10.0);
auto open_correction = polar<double>(open_att, open_phaseshift);
ref.Open *= open_correction;
@ -192,8 +192,8 @@ Calkit::SOLT Calkit::toSOLT(double frequency)
auto imp_short = complex<double>(0, frequency * 2 * M_PI * Lseries);
ref.Short = (imp_short - complex<double>(50.0)) / (imp_short + complex<double>(50.0));
// transform the delay into a phase shift for the given frequency
double short_phaseshift = -2 * M_PI * frequency * short_delay * 1e-12;
double short_att_db = short_loss * 1e9 * 4.3429 * short_delay * 1e-12 / short_Z0 * sqrt(frequency / 1e9);;
double short_phaseshift = -2 * M_PI * frequency * 2 * short_delay * 1e-12;
double short_att_db = short_loss * 1e9 * 4.3429 * 2 * short_delay * 1e-12 / short_Z0 * sqrt(frequency / 1e9);;
double short_att = pow(10.0, -short_att_db / 10.0);
auto short_correction = polar<double>(short_att, short_phaseshift);
ref.Short *= short_correction;